Take-up mechanism for looms.



L. B; JENGKES.

TAKE-UP MECHANISM FR LMS,

mvucmluu FILED MAY x1, i916.

1 ,226, 525 Patented Muy 15, 191,7

3 SHEETSMSHEET 3,

i/ Ms# ff m ' UNITED STATES PATENT oEEIoE.

vLAWRENCE B. JENCKES, OF WORCESTER, MASSAHUSETTS, SSIGNOR TO CROMPTON & KNOWLES LOGM WORKS, OF WORCESTER, MASSACHUSETTS, A CQRPORATION 0F MASSACHUSETTS.

TAKE-UP MCHANISM FDR LOOMS.l

v Specification of Letters Patent.

Patented May 15, 1917.

Application led May 17, 1916. Serial No. 98,201.

T 0 all whom 'it may Concern.'

Be it known that l. LAwincNeE B. JENCKES, a citizen ofthe United States, rcsiding at lloi'cestei', in thecoiinty 'of forcester and State of Massachusetts, have invent- 'is drlven through frictional connections thereby permitting tlie'take-up roll to advance a definite amount at each beat of the lay While the cloth roll advances merel-y enough to wind up the cloth delivered by the take-up roll, the driving connections slipping` ahead during the remainder of the take-up motion. The necessary angular ad- Vance of the cloth roll naturally decreases as the diameter of the. roll of cloth carried thereby increases.

When for any reason it becomes necessary to let back the'cloth at the take-up roll, the cloth roll as commonly driven will be turned backward through a substantial angle. Such movement, on account of large diarneter `of the roll of cloth, frequently lets back several times as much cloth from the cloth roll as is required to. produce the nec "essaryslacknes's fatwtht"take-up roll, thus r roll.

leaving an objectionable amount of slack cloth between the take-uprroll and the cloth It is the object of my invention to pro- 'vide 4a ytake-up mechanism in which, upon backward movement of the take-up roll, the cloth roll will let back only the amount of cloth desired at the take-up roll, regardless of the diameter of the roll of cloth.

In' .the preferred form of my invention this result is obtained by the provision of a ratchet mechanism for driving the cloth roll,

through which mechanisni the roll is driven forward. while the ratchet.mechanism has 11o backward driving engagement.

My invention t'iirther consists ol certain l arrangements and combinations of parts wliieh will be hereinafter described and more particularly poiilted out in the appended elaims.

A preferred form ot' my invention is shown in the drawings in which Figure 1 is a front elevation ot' my improved take-up mechanism;

Fig. 2 is a right hand side elevation thereof;

Fig. 3 is a left hand sectional elevation of a portion of the driving mechanism taken along the line in Fig. l, and

Fig. 4 is av longitudinal sectionabview'` taken along the line 4-4 in Fig. 3.

Referring to the drawings I have shown portions of a loom side 10, a breast beam 11 and a cross-girt 12. A take-up roll 13 and a guide roll 14 are rotatably mounted in bearings 15 and 10 respectively, said bearings being formed on a' stand 18 secured'at its upper end to the breast beam 11 and at its lower end tothe cross-gilt 12, v

A driving shaft 2() is mountfed in a bear,- i

ing 21 on the stand 1S and in a second bear;

ratchet wheel 23 is secured to the outer end of the shaft 20 and a driving pinion 24 is ing 22 secured. to the loom side 10.' A.

fixed to the shaft 2O between the bearings 21 and 22. The pinion 24 meshes with the intermediate gear 26, fixed to a shaft 27,10- tatable in bearings 28 and 29, and havin a pinion 30 securedto its left hand end. 'he

pinion4 30 engages the take-up gear 31 fixed` to the take-up .roll 13.

The ratchet wheel 23 is intermittently advanced by a pawl 32 mounted lon an arm 33, having a bearing concentric with the shaft 20 andconnected by a link 34 to any suitable portion of the loom from which 4a'reeiprocatory movement may be obtained. Back.

ward movement of the ratchet wheel 28 is prevented by a'aveighted check pawl 35, pivoted at 36 toa stand 37 bolted to the outer face of the loom side 10.

`tion. couiinonlv iliade ol' wood.

square hole thci'cin. through which cxtcnds' a square i'od ll'. tlietapei'cd 'right hand undl llv means ol the incchanisui thus far dc si'i'ihcd thc take-up roll willllic advanced a definite angulaiiunoiint toicach l'ecding niovcn'iciit of thc a\`vl 3:2.

'l`hc cloth roll l0 coi'nprises an outer porhavin;r a

of which engages a coi'i..i'-spoii lingr i-'cccss in the left hand cud of a short cloth roll shaft 42. Fig. 4, i'otalahlc in a hcariing- 43 in the stand 18 and a hearing 44 in thc hraclict 11T. A cloth roll guailisfrccl'v rotatahlil upon thc shaft l2 and is drivcn from thc inter- -i'iiei'liatc gear 2li through a sci-ond interinc- Thil drivingr connections hctwccn thc cloth i'o`ll guar-45 aud thc shalt -l-l will now lic d0- scribed; 'A ratchet wliccl l? is l\'c vcd` to thc shaft l2i(as"clcarly shown in Figi. l) said whccl heling provided with a scricsl olC friction drum 5U is i'otiitah'lv inountcd upon th(` huh of the ratchet wheel 4T and a pair of drivin; r pawls 51 and 52 areil'iivotallv mounted within the vdrinn 5() u'piii'rstuds 555 `and 54, carried thereby; Those'pawlsarc fori-cd inward hy' -springs 550 to engage the tcctli 4S of the As j'irejvioiisly -lth'e (zlotlli -i'oll gear 4T is eorrespondingly yacl'vanoiid. IThis gear' however "is connected' .to'ltheiiiloth' .50

,ratehct wheel 47. Ajfiictionhand oneircles the di'iiin 50, nig` formed of two parts and receives-a. positivefstep hy` steli 'advance 'miive/nient1 froi'n. the ratchet \\'lniel 3. For

roll shaflMlL` only-"through the frietion'-menibersaiidG and the `friction 4 friction nnai'ibers vbeingpositively' movedthrong-li the driving arm vG3 and the coperatii'ifhr -liigstlaind (32.,

i'l`lie ..fr'i e`tio ii 'iii-uni tlglaet-ingthrough the hy'fthe takelup .the-peripheryot'tlic di'uin at). Yhenitis desired to -let hack,thiueloth at thc` take-lip roll 13,--'the pawls-SQ and35 are'i'ioved ont 'through the over thc ratchet teeth 4S.

Connected at 57, and adapted cloth roll, said latter v i"efetive to drive Isaid cloth roll inthe -for'- 32 the ol' mash with thc `ratchet wheel 23 and the whcclV is tiirncd backward the necessary amount to slackcn the cloth at the take-up. i'voll.

'lhc backward movement of the take-np ,naar .'l is accompanied h v a similar backward inovvnioiit of vthe cloth roll gear 45,' as those two gcars are positively connected intermediate gears QG-.and 46 and thc pinion JH). 'lhislbaek ard movenient of thc l,fcar -t carrics with it the friction nicinhcrs 55 and fili and the friction drinn 50 hut (hc pawls 51 and 52 act only iii a vforward direction and during,r this backward niovenwnt of the drinn the)7 snap idly There is thus no liositi'vc hacl-:ward movement ofthe cloth roll vl() but the i'oll is free tomove toslacken thc cloth at the taleaip` roll. IV-henthe necessary amount of cloth has been let back,.

no further backward movement of the cloth roll occursind therefore there is no undue slarkncss of the cloth between the cloth'roll and the take-up roll.

Having thus describedv my .imiintion vit willvbe evident that changes and modifications can be made therein by those skilled in the art, without departing,r from the spirit and scope thercofas set f .orthin theelai-ms and l do not wish the details herein disclosed."

'hat I claim is2- i' x1. In a loom, a take-up mechanismxcoinprising a take-lip roll, a cloth roll, a driving Ishaft, positive' driving connections from to be otherwise limited in saiil'sliaft. tovsaid take-up roll, and fricltional driving connections from said shaft' to said cloth roll. said latter chidintr a paw'l `and ratvhet mechanism whereby thc driving shaft and take-upl roll may bc rotated ina backward'direetion independently ofthe cloth roll.

connections in- 2. ln a loom, a take-up mechanism coinprisinlgmi take-np roll, a cloth roll, n d-i'iving' shaft, positive driving connections from said shaft to said takenp roll, and frietional driving connections from said shaft-to said connections' l beingef'- wiird direction fully,

' 3. In a loom, a take-up mechanism coinlprising a take-np roll, alicloth -1'ol1,`a driv' ing shaft, positive driving connections .from said shaft to'said take-lip roll,` andfrictioiial driving connections from s nid shaft sov lois

to said' cloth roll,l said `connections including4 a driving'geaiiloosc on the clotlii'oll shaft, a ratchet rvvlieelh'xed tolsaid Shaft a fric-' tion drinnv rotatable yrelatively to said ratchetwhccl and havinga piiivl'adapted to engage the` ratchet teeth, l:i frietii'in4 band 'encircling Isaid .driini,' an`d l c'oni'icctions from said driving gemito said bands whereby saiddrum may be rictonally driven in both directions, but said ratchet wheel and roll ",shaftmay be driven in one direction only'.

'4. In' n loom, a. take-up mechanism com-- i prising a take-nproll, u cloth roll, n driving shaft, positive driving connections Vfrom l'.sad shaft to said take-np roll, and frictional driving connections from said Shaft to said cloth roll, said latter connectionsvinis effective to in one dlreetion only. A

1n teetimony whereof I have hereunto set 15 LAWRENCE B. JENCKES.

n freely rotatable driving gearu 10 ixed to the cloth roll shatLsLndl u ratchet mechanism through which said geur drive said member and shaft 

